Marek Vasut 171316a68d drm/msm: Avoid potential overflow in timeout_to_jiffies() ... The return type of ktime_divns() is s64. The timeout_to_jiffies() currently assigns the result of this ktime_divns() to unsigned long, which on 32 bit systems may overflow. Furthermore, the result of this function is sometimes also passed to functions which expect signed long, dma_fence_wait_timeout() is one such example. Fix this by adjusting the type of remaining_jiffies to s64, so we do not suffer overflow there, and return a value limited to range of 0..INT_MAX, which is safe for all usecases of this timeout. The above overflow can be triggered if userspace passes in too large timeout value, larger than INT_MAX / HZ seconds. The kernel detects it and complains about "schedule_timeout: wrong timeout value %lx" and generates a warning backtrace. Note that this fixes commit 6cedb8b377 ("drm/msm: avoid using 'timespec'"), because the previously used timespec_to_jiffies() function returned unsigned long instead of s64: static inline unsigned long timespec_to_jiffies(const struct timespec *value) Fixes: 6cedb8b377 ("drm/msm: avoid using 'timespec'") Signed-off-by: Marek Vasut <marex@denx.de> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Jordan Crouse <jcrouse@codeaurora.org> Cc: Rob Clark <robdclark@chromium.org> Cc: stable@vger.kernel.org # 5.6+ Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20210917005913.157379-1-marex@denx.de Signed-off-by: Rob Clark <robdclark@chromium.org>		2021-10-11 17:30:53 -07:00
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drm	drm/msm: Avoid potential overflow in timeout_to_jiffies()	2021-10-11 17:30:53 -07:00
host1x	gpu: host1x: debug: Dump DMASTART and DMAEND register	2021-08-13 18:23:32 +02:00
ipu-v3	Updates to the interrupt core and driver subsystems:	2021-08-30 14:38:37 -07:00
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vga	vgaarb: don't pass a cookie to vga_client_register	2021-07-21 10:29:10 +02:00
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